KCB is a Three-letter acronym that may stand for:
- Kekchi Council of Belize
- Kenya Commercial Bank Group
- Kenya Commercial Bank
- Kenya Commercial Bank (sports club)
- Kenya Commercial Bank (Uganda)
- Keep Coming Back - AA Slogan
- Klezmer Conservatory Band
- Knight Commander of the Order of the Bath
- Konkanastha Chitpavan Brahmins
- Koninklijk Conservatorium (Brussels)
- Korfbal Club Barcelona
- Kerala Congress (Balakrishna Pillai)
kcb is the SIL code (ISO 639-3) for the Kawacha language of Papua New Guinea.